Wheel-feed for grinding-machines.



1. s.'wzLc0 ,'1.` WHEEL FEED' roR-Gmwuw M/xcmas/ APPLICATION man ocTQ24, me. m. i I imma Apr. 2,15%,-

3 SHEETS-SHEET i.

J. s. wxLcox,`1n:= WHEEL FEED FOR=GRINDING MACHINES.

APP LICATIOH FILED OCT. 24| |916.

1263,83@ Patented pn 2, 19128.

s SHEETS-SHEET 2l The in 34 is 'so ositionedthatfthefspringl metal arm 35, lwhichimay be. adjustably secured to the arm 29 by a nut 36 (see Fig. 2).

'33 y'ieldinglyv old the plate 31 in either ofthetwopositions shown in Fi 3. l Forthe manual operation o the cross ffeed, a lhandle 40 (Fig. 2) is mountedl in anA 41 which maybe clampedto the shaft :21 andratchet wheel l20 bythe binding nut 22.v Atthe other end' of the arm '41 mechanism .M Ais provided for fine adjustment of fthe wheel, and a shie1d43 forms an automatic stop for the feed. On the opposite side of the arm 41 there is formedr a Shoulcally to' the dotted line position in Fig.l 3

'wisedirection s VIThe arm 27I of the feed'pawl 27 is pro'- vWhenever the arm.41 is'rotated in a clockf' vided with a surface 27b adapted to engage arg the rod 57. l

'a surface 31a upongthe throw-o plate 3l when the Vpmte is in the position shown in 1.` en the'link 30 moves upward the surfaces 27b and 31acome into contact, after ,which the arm 29 is swung a out its center-and the pawlf'is moved backward -while out of contact with the ratchet wheel 20. When thethrow-oif plate 31 is moved toits dotted lineposition, the surfaces 27h and 31a no lon er engage each other. lI no w escribe'the devices for actuadjustably""secured in aslot 51 formed in the face' of the crank disk 52. The disk 52 u o n the shaft 53 and 'engages a, circular rac 56 loose upon .a rod l57. The rack' is positioned upon the rod- 57 by springs 58 -interposed between'the rack and the ends of-a -l The yoke 59 is provided with a-'projecting member 6G. (Fig. 4) which engages a clutch '61 slidable between oppositely rotated bevel ears 62 and 63,- the gear 463 being driven om the gear 6 2 through a third bevel gear l Latches' (65 .and 66 are provided for holding the clutch member 61 in engagement With one 'or the other of thedriving gears v until the latch is released by a feed lever 'to be described. In Fig. 10`I have shown a detail of one of the ball bearings which permit the yoke" member 59 to be moved easily valong therod. 57 when the latches 65 or 66v are released. 'The feed lever is formed in two parts and lcomprises a depending member 70 (Figs. '1

and 8) having asegmentgear 70e' formed on its l ingly oscillate the' "pinion 455.

clutch'member 54 is 'positioned to connect'.80 the pinion 55 'to the shaft 53, the crank vdisk der 44 which engages a lug 45 on'thethrow-V off plate 31 and moves the plate automati the idle stroke of the feed pawl, the pawl. l swings about its pivot28 on the arm-29 until thev pawl27. The link is pivoted at its lower end on a crank pin 50 (Fig. 8)

yoke 59 also'slidable upon shaft 'above'y escribed. The handle .91' isl owerend,.xedto a short M71 Leonesa rotatable in the frame member 26, and an. upwardly extending 1nember'72 also fastto lsaid shaft- 71 and having a block 73 mounted .'therein. The block 73 is adjustable into the path of `a dog 74 which maybe clamped in '70' any desired position along the side yof the table 75. It will be understood, that two of these dogs are used, and ,that they are adapte'd to'engage the f block on opposite sides thereof at opposite fends of the path of 75' 'L travel. Such oscillation of the feed lever is effective, through the segment gear 70a and the sliding circularI rack 56, to correspond- When the 52 and'pin 50Will' be correspondingly oscillated and will actuate tlie'feed lpawl 27.'

"The ends of the segment gear 7 0a also alter-'y nately Iengage andrelease the latches 35 and 66. A

The right-hand face'of the clutch member 54 as viewed in Fi 8 is: formed of two un- -equally spaced projecting portions 54a (Fig. 7) adapted toI engage coperating projec tions similarly spaced on 'the end of the pinion 55. It .Will be evident that these parts can only engage in a single relative angular position and therefore' the -crank pin 50 will4 alwaysassume the sameV position relative to *the segment `gear a when the' clutch is in mesh.

`At the rear end of the shaft 53 (Figs. 4 and 8) -a bevel pinion 80 is loosely mounted and engages a bevel gear 8 1 secured t'o th'e .continuously rotated bevel lgear 63 'previadapted to engage corresponding projecting portions 54b (Fig, 11) upon the rear face of the sliding clutch-member 54.' rI he 'clutch member54is grooved to receive a yokearmV (Fig. 5 carriedfbyasleeve 84 slidable on' a rotata ly mounted shaft`85. The sleeve 84V is' provided with a spiral groove 86 Within which is positioned a pin 87 fixed inthe shaft 85.v As the shaft 'is moved angularly the nonsrotatable sleeve 84I .isl necessarily -moved axially of'theshaft and is effective' t0 move the clutch member 54 into, engage- 11.5 'ment with the pinion 55 or the bevel pmion 80. 1 The shaft is yieldingly positioned. longitudinally by sprmgs 88 and 89 which yield to permit the teeth on the clutch to ride over the corresponding teeth Von the pinion they arrive ata suitable position for engagement. The shaft l8 5 is supported at i-ts outer end in the hub 90 of a handle 91. through which the clutch memberis Controlled.4 The shaft is slotted, as at 93, to 'reeive a crosspin 94 inthe inner end of the hub 90, the slot permittn the -amfal movement ofthe sueialded with B11111801" 92 ciprocating -i which the fee for holding the handle 'and clutch' ,in iad- Justed position.

the;y wheel -feed is to be actuated from a recircular rack 56, the pinion 55, and the 'shaft' 53 to the disk 52 and the crank pin 50, which receive thereb d, pawl 27 is intermittently actuated as the table approaches each end of its path of travel.

If it is desired to use the wheel feed while the table is held in xed position, the clutch member 54. is moved into engagement with,

the bevel pinion 80 continuously driven by the bevel gear 81. Continuous'rotation is thug imp artedto the crank disk 52 and crank pin 50, and' a continuously operated feed of the grinding wheel is thus obtained.

Having thusdescribed one form of myiny vention it will be evident that' changes and modifications can bermade therein by those skilledin the art without departing from the spirit and scope of my invention as set forth in the claims and I do vnot wish to be otherwise limited to the details herein disclosed, but what I claim is y l l. An automatic wheel feed for. grinding machines comprising intermittently actuated means for feeding said wheel, mechanically, separately, continuously actuated means for feeding said wheel mechanically, and manual 4means forA changing the system of feed.l

-2. An automatic wheel feed for grinding machines comprising feed-actuating devices independentl operated from a reciprocating member, ad 'tional feed-actuating devices operated from a continuously rotated meinber, and manual means to render either set of devices operative.

3. An automatic wheel feed for grinding table the clutch member .54 is an oscillating movement'by pawl, a pawl-actuating shaft, intermittently `operated ineans to oscillatesaidshaft, separate .means to rotatesaid shaft cbntinuously,

to connect #either-fof said actuating mea sito said shaft. i

4. A wheel. feedforggrindingjmachines comprising a ratchet and feed-pavvl,I a crank pim a link connecting Sid-fpasv1gfind said crank pin,means to rotatably support said pin, means to -adjus't ther-throw@ O" Said plIl on its support, means to oscillaft y additionalmeans to-frtatesaid infcontmuously, and a clutch member efectiveto throw either of said two latterilmcans;` iifito operation. i "is 5. A .wheel feed for grinding`1-machines comprising a ratchet and 'feedfpjawh a crank justablyl secured, a shaft'for said disk, an oscillating member and a continuously rotated member each loose on said shaft, a clutch member keyed to said shaft and efe fective to secure either the oscillating or the rotating member to the move said clutch member.

6. A wheell feed for grinding machines comprising a shaft, an oscillating member and a continuously.rotated member each loose on said shaft, a clutch member eifec-V tive to secure eitheruthe oscillatingvor the rotating member toy the shaft, and means to move said clutch, provision being made to linsure engagement of said clutch member and said oscillating member in a single predetermined angular relation.

7. A wheel feed for grinding machines comprising a shaft, an oscillating member and 'a continuously rotated member each loose on said shaft, a clutch member effective t0 secure either the oscillating or the rotating member to the shaft, and means to move said clutch, including devices adapted JOSEPH s; wiLooX, JR.-

"said pin,

pin, a link connecting said paifvllzfand said 'crank pin, a disk-to which Said pin is adshaft, and means to"V 

